Obstetrical stibrttp



(No Model.)

J. M. MAULRBB.. OBSTBTRIGAL sTlRUP.

Patented Nov. 20, 1894.'

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edges ofthe plate c, these outwardly bent arms.

AUNrirnr.) STATES PATENT' OFFICE.

JOSEPH M.v MAURER, OF WASHINGTON, PENNSYLVANIA.

. ossTETRicAL srIRR-U P.

SPECIFICATION forming partof Letters Patent No. 529,626, dated November 20, 1894.*

Y Application nea December' 6,1898. serai No. 492,931. oi@ man.)

To lULZZ whom tlm/ay concern:

Be it known that I, JOSEPH MORGAN MAU- RER, a citizen of the United States, residing at Washington, in the county of Washington and State of Pennsylvania, have invented certain new and useful Improvements in Obstetrical Stirrups, of which the following is a specification, reference being had therein to the accompanying drawings.

In the accompanyingdrawings, Figure 1. des- The present improvement has for its objectV the provision of means for more securely attaching th'e 'stirrups-to bed rails provided with ornamental moldings along their upper edges.

vReferring to the drawings by letter, a designates the main-bar of the stirrup, whichisY bent upwardly-at its outer end to form a stirrup and downwardly at its other end to form a clamping-jaw. The movable clamping-jaw b is adjustably attached to the main-bar and constructed the same as in my former patent. The attachment consists of a vertically adjustable plate c clamped to the inner face of the movable jaw b and having its upper end bifurcated so as to embrace the main-bar, the two arms formed by the bifurcation to vertically guide the plate and prevent ittwisting. This plate is clamped adjustably to the jaw by means of a screw-bolt c which passes horizontally through the vertical slot in the clamping-jaw and is tapped through a threaded opening in the plate, a nut d being screwed on the bolt up against a washer interposed between the nut and the clamping jaw. The outer end of the screw is squared for the reception of a suitable operating key and lits .inner end is pivotally attached to a bearingplate e whose opposite ends are bent outwardand slide in notches formed in the vertical serving to guide the bearing plate and retain it in its position. c

To adjust and attach the device to a bed` rail provided with a molding, it is simply necessary to place the clamping jaws down over the edge of the rail, then loosen thenut on the screw and adjust the vertical plate so as to bring the bearing-platev below the molding, and then (by means of a key) screw up the screw until the bearing plate bearstirmly stirrup bar, a vertically adjustable plate clamped to said movablejaw, a horizontally adjustable screw carried by said plate and adapted to clamp the p-late in its adjusted positions, means for locking the screw and a i bearing plate carried by the end of the screw and adapted to move vertically with the screw and plate, substantially as described.

2. The combination of a stirruphaving a fixed and a movable jaw, a plate carried by said movable jaw, means for adjusting this plate vertically, a horizontally-adjustable bearing-plate, having outwardlyprojecting arms engaging said vertically adjustable plate, substantially as described.

3. The combination of a stirrup having a fixed and a movable jaw, a horizontal screw carried by saidmovable jaw, a bearing plate on the inner end ot said screw, this plate being provided with outwardly-extending arms, and means forengaging these arms and guiding them, substantially as described.

4. The combination ot' a stirrup having a pair of jaws one of which is movable, said movable jaw being vertically slotted, a vertically movable plate clamped to the inner side of said jaw, a screw passed through the slot in the movable jaw and athreaded opening in the plate, a bearing on the inner end of the screw and anut screwed over the outer IOO a bearing plate ou the inner end ofthe screw,

said bearing plate having outwardly extending arms working in notches in the vertical plate, substantially as described. 15 In testimony whereof I aix my signature in `presence of two witnesses.

JOSEPH M. MAURER.

Witnesses:

JOHN M. STOCKDALE, GEO. O. JONES. 

